ChromeOS version: 62,63,64 
ChromeOS device model: Asus C101P, Asus Chromebox CN62, HP Chromebook 13 G1 

Case#: 13653082

Description: 
Chrome Remote desktop does not work properly when connecting to a dual-monitor device from a single-monitor. Only main display screen is shown and controls might become unresponsive.

Steps to reproduce: 
- Connect external monitor to Chrome book or two monitors to a Сhromebox
- Share the screen in Chrome Remote Desktop 
- Access the shared session with any other device that have one display

Video: https://drive.google.com/open?id=1Rmeu-tnomaR1t8-H_GpMFmoAki86kr5D

Current Behavior / Reproduction: 
Second screen does not show up in Chrome Remote Desktop session  

Expected Behavior: 
Second screen available at sharing session  

Drive link to logs: 
- Device with external monitor: https://drive.google.com/open?id=1euHh0GQYDQTGZYKQDhGkH3me7v5BpnsJ
- Device used to connect: https://drive.google.com/open?id=1VoIzGaBGgDojdtS-KMLvXg5n31iju1vH

approximate time: 16:35-16:37 EST

### 
I can not reproduce this issue on Chrome v.62 and v.63 on Windows 10 or on Ubuntu 14.04 

possibly related to https://bugs.chromium.org/p/chromium/issues/detail?id=169262